Race a Speedboat
Can you make a paper boat race across the water just by gently touching the surface of the water?
Hypothesis (What I think will happen) I think it will go because the bubbles will push it
Coloured card, washing up liquid, pencil or sharpie, scissors, large container of water.
Method (What we did) we got dishwashing liquid and gently touched the water behind the boat
Observation (What happened)
the boat started to move
Conclusion (Why I think it happened) I think that the boat zoomed off was because the dishwashing liquid was forcing the boat to move.
Short Experiment to Follow Up
Make Metal Float
Gently place a paperclip on the water’s surface.
Hypothesis (What I think will happen) the boat will sink because the paperclip will push it down
Observation (What happened) the boat sank because of the paperclip pushing it down
Conclusion (Why I think it happened) I thought that it would happen because its giving the boat extra weight to hold and if the boat is not strong enough it will sink